Finding the Fourth Proportional to 1,418.22, 2,123.55 and 1,142.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,418.22 : 2,123.55 = 1,142.82 : x
2. Step 2: Convert to fraction form
   1,418.22/2,123.55 = 1,142.82/x
3. Step 3: Cross multiply
   1,418.22x = 2,123.55 × 1,142.82
4. Step 4: Simplify right side
   1,418.22x = 2,426,835.41
5. Step 5: Solve for x
   x = 2,426,835.41/1,418.22
6. Step 6: Final answer
   x = 1,711.18